Summary of the invention
The present invention cannot meet the problem of suitability for industrialized production in order to solve existing blue light material, provide one to have higher photoluminescence efficiency, and cost is low, Benzanthracenes luminous organic material that productive rate and purity are high and its preparation method and application.
In order to solve the problems of the technologies described above, technical scheme of the present invention is specific as follows:
Benzanthracenes luminous organic material, the general structure of this material as the formula (1):
Wherein, A is C
8-C
18aromatic heterocyclic radical, C
9-C
15fused ring aryl or triarylamine.
Preferred Benzanthracenes luminous organic material of the present invention, wherein A is N-phenyl-2-carbazyl, 3-phenanthroline base, 5-benzofuryl, 2-phenanthryl, 9,9-dimethyl-2-fluorenyl, 5-indenyl or 2-naphthyl.
Benzanthracenes luminous organic material, it is any one in following 001-008 chemical structural formula:
Be exactly concrete structure formation more above, but this series compound does not limit to and these listed chemical structures.Every take formula (1) as basis, the A group for it compound of the simple transformation of the interior group of all scopes of front definition all should be included.
The preparation method of Benzanthracenes luminous organic material, this preparation method's concrete steps and condition are as follows:
(1) in molar ratio for 1:0.7 ~ 1.5 take 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene with containing the substituent boric acid of A;
(2) add again four (triphenyl phosphorus) palladium, sodium carbonate and solvent, four (triphenyl phosphorus) palladiums and 3,9-bis-bromo-7, the mol ratio of 7-dimethyl-7H-benzanthrene is 1:20 ~ 800, sodium carbonate and 3,9-bis-bromo-7, the mol ratio of 7-dimethyl-7H-benzanthrene is 1 ~ 4:1;
(3) degassed to reaction system;
(4) temperature of reaction system is risen to 70 ~ 100 ℃, back flow reaction 24 ~ 30 hours;
(5) cooling, suction filtration, washing, after being dried, obtains described Benzanthracenes luminous organic material.
In above-mentioned preparation method, the solvent adding in step (2) is tetrahydrofuran (THF).
In above-mentioned preparation method, in step (4), the temperature of reaction system is risen to 75 ~ 85 ℃.
In above-mentioned preparation method, the reflux time in step (4) is 27 ~ 29 hours.
Beneficial effect of the present invention:
1, a kind of basic framework provided by the invention is Benzanthracenes compound luminous organic material, owing to having introduced methyl, can increase the solvability of such luminous organic material, more easily processing, and film forming properties is good; Meanwhile, such luminous organic material, because the introducing of different substituents can change lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) energy level of this compounds, changes transition of electron energy level.So the emmission spectrum of this compounds has controllability, by regulating emmission spectrum can make this material can launch blue light, luminous efficiency also obviously improves; Therefore, luminous organic material of the present invention is the high performance electroluminescent material of a class, can meet the demand of suitability for industrialized production.
Particularly when A is N-phenyl-2-carbazyl, 3-phenanthroline base, 5-benzofuryl, triarylamine, 2-phenanthryl, 9, when 9-dimethyl-2-fluorenyl, 5-indenyl or 2-naphthyl, the luminous efficiency of the Benzanthracenes luminous organic material preparing in dilute solution is 95.9%, and the luminous efficiency in film is 57.5%.
2, the preparation method of Benzanthracenes luminous organic material provided by the invention, by optimizing reaction conditions, productive rate increases substantially, and productive rate can reach 92%; Reaction solvent changes common solvent into, and convenient operation is easily purified, and purified rear HPLC purity is greater than 98%; And reduced cost, and make this series compound have the possibility of further Application and Development, can meet the demand of suitability for industrialized production.
Particularly, when the temperature of reaction of reaction system is controlled at 75 ~ 85 ℃, reflux time is 27 ~ 29 hours, the Benzanthracenes luminous organic material preparing, and the luminous efficiency in dilute solution can reach 94.5%, and the luminous efficiency in film can reach 62.5%.
3, Benzanthracenes luminous organic material of the present invention is owing to having higher luminous efficiency, can be used as luminous organic material, luminous material of main part or transport material, be applied on electroluminescent device, data results by Application Example 1 shows, the blue-light device of making of material of the present invention, its luminous efficiency, brightness, driving voltage, there is good performance life-span and stability aspect, are very promising class electroluminescent organic materials.
Embodiment
Benzanthracenes luminous organic material provided by the invention is 3,9-bis-bromo-7 by containing, 7-dimethyl-7H-benzanthrene with obtain by Suzuki linked reaction the compound that general structure is formula (1) containing the substituent boric acid of A.Its synthetic route is as follows:
Embodiment 1: compound 001 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, N-phenyl-2-carbazyl boric acid 11.30g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 90 ℃, back flow reaction 24 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake is after water, ethanol and ether washing, oven dry obtains 3,9-bis-(N-phenyl carbazole bases)-7,7-dimethyl-7H-benzanthrene 30.32g, productive rate is more than 92%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 728.92; Test value is 728.90.Ultimate analysis: calculated value is C:90.63%; H:5.53%; N:3.84%; Test value is C:90.62%; H:5.54%; N:3.84%.
Embodiment 2: compound 002 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, 3-phenanthroline ylboronic acid 15.63g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 100 ℃, back flow reaction 27 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake, after water, ethanol and ether washing, is dried and is obtained 3,9-bis-(phenanthroline bases)-7,7-dimethyl-7H-benzanthrene 25.26g, productive rate is more than 93%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 600.71; Test value is 600.69.Ultimate analysis: calculated value is C:85.98%; H:4.70%; N:9.33%; Test value is C:85.96%; H:4.72%; N:9.32%.
Embodiment 3: compound 003 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, 5-cumarone ylboronic acid 11.30g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 100 ℃, back flow reaction 30 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake is after water, ethanol and ether washing, oven dry obtains 3,9-bis-(benzofuryl)-7,7-dimethyl-7H-benzanthrene 19.40g, productive rate is more than 90%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 476.56; Test value is 476.54.Ultimate analysis: calculated value is C:88.21%; H:5.08%; O:6.71%; Test value is C:88.20%; H:5.07%; O:6.72%.
Embodiment 4: compound 004 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, triarylamine boric acid 20.17g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 75 ℃, back flow reaction 27 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake, after water, ethanol and ether washing, is dried and is obtained 3,9-bis-(triarylamine)-7,7-dimethyl-7H-benzanthrene 29.75g, productive rate is more than 90%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 730.94; Test value is 730.95.Ultimate analysis: calculated value is C:90.38%; H:5.79%; N:3.83%; Test value is C:90.36%; H:5.80%; N:3.84%.
Embodiment 5: compound 005 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, 2-phenanthryl boric acid 15.49g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 85 ℃, back flow reaction 29 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake, after water, ethanol and ether washing, is dried and is obtained 3,9-bis-phenanthryl-7,7-dimethyl-7H-benzanthrene 25.1g, productive rate is more than 93%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 596.76; Test value is 596.78.Ultimate analysis: calculated value is C:94.60%; H:5.40%; Test value is C:94.62%; H:5.38%.
Embodiment 6: compound 006 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, 9,9-dimethyl-2-fluorenyl boric acid 16.61g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 95 ℃, back flow reaction 25 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake, after water, ethanol and ether washing, is dried and is obtained 3,9-bis-fluorenyl-7,7-dimethyl-7H-benzanthrene 26.00g, productive rate is more than 90%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 628.84; Test value is 628.82.Ultimate analysis: calculated value is C:93.59%; H:6.41%; Test value is C:93.60%; H:6.42%.
Embodiment 7: compound 007 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, 5-indenyl boric acid 11.16g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 100 ℃, back flow reaction 24 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake, after water, ethanol and ether washing, is dried and is obtained 3,9-bis-indenyl-7,7-dimethyl-7H-benzanthrene 19.23g, productive rate is more than 90%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 472.62; Test value is 472.60.Ultimate analysis: calculated value is C:94.03%; H:5.97%; Test value is C:94.05%; H:5.99%.
Embodiment 8: compound 008 synthetic
Concrete synthetic route is shown below:
By 3,9-bis-bromo-7,7-dimethyl-7H-benzanthrene 18.18g, 2-naphthyl boric acid 12.0g, sodium carbonate 20g, tetrahydrofuran (THF) 250ml and water 125ml add there-necked flask, degassed, add four (triphenyl phosphorus) palladium 0.9g, be warming up to 90 ℃, back flow reaction 26 hours, be cooled to room temperature, separate out after solid suction filtration, filter cake, after water, ethanol and ether washing, is dried and is obtained 3,9-dinaphthyl-7,7-dimethyl-7H-benzanthrene 20.21g, productive rate is more than 90%, and HPLC purity is greater than 98%.Mass spectrum: calculated value is 496.64; Test value is 496.62.Ultimate analysis: calculated value is C:94.32%; H:5.68%; Test value is C:94.30%; H:5.70%.
Application example 1
The ito glass substrate that it is formed with to 1000 thickness in the above, is placed on the ultrasonic middle cleaning 30 minutes of washings, then uses distilled water ultrasonic cleaning 10 minutes twice.After distilled water wash, use respectively Virahol, toluene, acetone, ethanol difference ultrasonic cleaning 30 minutes, then dry.Finally put into plasma washing machine, use oxygen plasma cleaning base plate 5 minutes, send into vacuum evaporation equipment and process.
By NPB, the sample of preparation in embodiment 1, AlQ, LiF, Al respectively evaporation, to device, goes into object construction device: [sample (30nm)/AlQ (20nm)/LiF (the 5nm)/Al (10nm) of preparation in ITO/NPB (20nm)/embodiment 1].Organism velocity of evaporation is 1/s, and the velocity of evaporation of LiF is 0.5/s, and the velocity of evaporation of Al is 2/s, and vacuum keep is 10
-5vacuum tightness below pa.
The test result that the sample making of preparing in embodiment 1 obtains device 001 is cut-in voltage 4v, and high-high brightness is 3600cd/m
2, under 10v voltage, observing efficiency is 27Lm/w, chromaticity coordinates (CIE) value is x:0.14; Y:0.14, obtains a blue device, and life-span transformation period of device is 20000 hours.
The sample making of embodiment 2 ~ 8 preparation becomes device 002 ~ 008, and its structure is identical with the device architecture of embodiment 1 sample making, and test result is as table 1:
The device performance test of the sample making of table 1 embodiment 2 ~ 8
The luminous efficiency of the sample compound of table 2 embodiment 1 ~ 8 preparation
| Sample |
Luminous efficiency in dilute solution |
Luminous efficiency in film |
| Embodiment 1 |
98% |
55% |
| Embodiment 2 |
97% |
57% |
| Embodiment 3 |
95% |
58% |
| Embodiment 4 |
95% |
62% |
| Embodiment 5 |
94% |
63% |
| Embodiment 6 |
96% |
54% |
| Embodiment 7 |
97% |
55% |
| Embodiment 8 |
95% |
56% |
Can find out from the data of table 2, the luminous efficiency of the Benzanthracenes luminous organic material that embodiment 1 ~ 8 prepares in dilute solution is 95.9%, luminous efficiency in film is 57.5%, show that this Benzanthracenes compound has high luminous efficiency, can be used as luminescent material or luminous material of main part and transport material, be applied in electroluminescent device.According to application example 1, the sample of preparation in embodiment 1 ~ 8 is used for making blue-light device simultaneously, the performance test results of its device is as shown in table 1: by data test and comparison, we find that this compounds is the electroluminescent organic material of excellent property, particularly, as the good luminous material of main part of Performance Ratio and transport material, it is a very promising class electroluminescent organic material.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being extended out thus or variation are still among the protection domain in the invention.